US3802676A - Method for installing aeration systems in sewage treatment tanks - Google Patents
Method for installing aeration systems in sewage treatment tanks Download PDFInfo
- Publication number
- US3802676A US3802676A US16868571A US3802676A US 3802676 A US3802676 A US 3802676A US 16868571 A US16868571 A US 16868571A US 3802676 A US3802676 A US 3802676A
- Authority
- US
- United States
- Prior art keywords
- header
- connectors
- headers
- tank
- openings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
- B01F23/23105—Arrangement or manipulation of the gas bubbling devices
- B01F23/2311—Mounting the bubbling devices or the diffusers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
- B01F23/23105—Arrangement or manipulation of the gas bubbling devices
- B01F23/2311—Mounting the bubbling devices or the diffusers
- B01F23/23114—Mounting the bubbling devices or the diffusers characterised by the way in which the different elements of the bubbling installation are mounted
- B01F23/231142—Mounting the gas transporting elements, i.e. connections between conduits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
- B01F23/23105—Arrangement or manipulation of the gas bubbling devices
- B01F23/2311—Mounting the bubbling devices or the diffusers
- B01F23/23115—Mounting the bubbling devices or the diffusers characterised by the way in which the bubbling devices are mounted within the receptacle
- B01F23/231151—Mounting the bubbling devices or the diffusers characterised by the way in which the bubbling devices are mounted within the receptacle the bubbling devices being fixed or anchored in the bottom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
- B01F23/23105—Arrangement or manipulation of the gas bubbling devices
- B01F23/2312—Diffusers
- B01F23/23126—Diffusers characterised by the shape of the diffuser element
- B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S261/00—Gas and liquid contact apparatus
- Y10S261/70—Sewage aerators; diffusers
Definitions
- a method of installing an aeration System in a sewage 285/286 treatment tank includes the steps of prefabricating [51 1111. C1 B0 3/04 headers having transversely extending Connectors [58] Field Of Search 261/122, 124; 285/286; gitudinany spaced along the header the connectors 248/74 R; 138/171 being threaded to receive air diffusers; supporting the header in a tank to extend horizontally therein; adjust- 156] References cued ing the position of supportof the header to obtain a UNITED STATES PATENTS desired uniform depth in the tank for the header; lev- 1,138,228 5/1915 Kindervater 285/286 x i g t ad ta ng th head r on its axis to 1,457,183 5/1923 Mitchell 285/286 X level the connectors; and attaching air diffuse
- the header must be substantially level lengthwise because it is necessary to have all of the air diffusers which are carried bythe header located the same distance from the level of the liquidin the tank. In other words, the submergence of the air diffusers is critical and must be uniform throughout the length of the header. Also, it is very important that diffusers which project laterally from both sides of the header be level so that they do not project at an angle from the horizontal.
- Another object of this invention is to provide an improved header-connector structure in which air pressure loss is minimized by providing a smooth transition between the header and the connectors attached thereto.
- a further object of this invention is to provide improved means for supporting the header in an accurately aligned horizontal position within the sewage treatment tank.
- An additional object of this invention is to provide sturdier and more accurate connection between the headers and the connectors coupled thereto for supporting the diffusers, and to eliminate the necessity of making connections on the site between headers and the transverse connectors.
- FIG. 1 is an elevational viewofa header of this invention installed in a sewage treatment tank, partbeing broken away;
- FIG. 2 is a plan view of the header shown in FIG. 1;
- FIG. 3' is an enlarged elevational view of a portion of the header shown in FIGS. 1 and 2;
- FIG. 4 is a cross-sectional view "taken along the line 4-4 of FIG. 3;
- FIG. 4A is an enlarged fragmentary cross-sectional view of the joint between the header and diffuser
- FIG. 5 is an enlarged elevational view of a different type of connection between the header and connector
- FIG. 6 is a cross-sectional view taken along the line 6-6 of FIG. 5;
- FIG. 7 is a plan view of one of the connectorsalone, of the type of FIGS. 51 and 6;
- FIG. 8 is an enlarged fragmentary elevationalview of the supporting structure for the headers shown in FIGS. 1 and 2;
- FIG. 9 is across-sectional view taken on the line 9'9 DETAILEDDESCRIPTION OF THE INVENTION
- FIGS. 1 and 2 there is shown one header installed in the bottom of a sewage treatment tank.
- a plurality of headers may be used in any one sewage treatmenttank.
- One typeof installation is disclosed-in detail in my co-pending application US. Pat. Ser. No. 881,709, which was filed on Dec. 3, 1969, for an Apparatus for and Method of Aerating Liquor in Large Sewage Treatment Tanks.
- the relationship between the headers and the tank is disclosed in said co-pending patent application. Since the present invention does not deal with the relationship. between the headers, however, only a single header is disclosed in the drawings of this application. r
- the sewage treatment tank is represented by a concrete floor l0 and two concrete side walls 12 and 14.
- the header 16 is supported on the bottom 10 of the tank by means of supporting members 18 to be hereinafter described in greater detail.
- Projecting fromboth sides ofthe header 16 are diffusers 20 which are attached to opposite ends of diffuser connectors 22.
- diffusers 20 In certain header installations, such as near a wall, there may be adiffuser at one end only of a connector.
- diffusers 20 is described in'my US. Pat. No. 3,424,443, which was issued on Jan. 28, 1969, for an Apparatus for Diffusing Gas into a Liquid.
- This invention is principally concerned with a method of installing the headers 16, connectors 22, and diffusers 20 in such a way as to accurately position the heade'rsl6 and diffusers 20 in a predetermined horizontal plane at the proper location to produce the desired circulatory effect on the liquor in the sewage treatment tank.
- the connectors 22 are prefabricated in position on the headers 16 as shown in FIGS. 4 and 4A, with the connectors 22 being accurately aligned with the other connectors 22 and beingheld in position by brackets 24 and 26, which are cut to accuratelyfit in the space between connectors 22 and header l6, and are then welded in position to maintain each connector 22 in its proper orientation with respect to the axis of header 16.
- the connectors 22 have nipples 25 drawn therefrom which are welded to short nipples 23 drawn from the bottom of the header l6.
- the method of this invention includes the steps of (a) prefabricating the header 16 with the connectors 22 welded onto the header 16 at spaced longitudinal positions along the header, with all of the connectors 22 in the same plane with each other and each connector extending perpendicular to the axis of header 16; (b) placing the prefabricated header 16 and connectors 22 within the tank and supporting it within the tank in a predetermined horizontal position; and (c) screwing the diffusers 20 onto the connectors 22, usually after the connectors 22 have been horizontally aligned, so that the diffusers 20 will be horizontally aligned when they are installed.
- the method of this invention also includes the steps of leveling the header and rotating the header about its axis to level the connectors.
- FIGS. 5, 6, and 7 show a different connector configuration that can be used in place of the configuration shown in FIGS. 3 and 4 and 4A.
- a straight connector 50 has an oval-shaped opening 52 cut therein and a matching oval-shaped opening 53 is cut into a header 17.
- the connector 50 is then joined to the header 17 by placing the two oval cut-outs together and welding the connector 50 to the header 17 along the juncture of the connector and the header.
- This configuration may be preferable in some applications because of the relative low resistance to the passage of air that it provides in comparison to the embodiment shown in FIGS. 3 and 4. It should be understood, however, that either type of connection can be used in the initial step of this invention.
- the connectors 22 or 50 In the prefabrication of the header and connector assemblies it is preferable to use precision fixtures so that the connectors will be attached to the headers very accurately with respect to their alignment relative to the axis of the header and to each other. And, in addition to the connectors 22 or 50, means must be mounted upon the header for receiving header supports and for providing for the adjustability of the header when it is supported within the sewage treatment tank.
- FIGS. 8 and 9 show the support means for supporting the header in the tank.
- the illustrated support is positioned at a joint between two sections of the header 16 which are joined together by an airtight clamp 54 which can be any suitable type of prior art clamp that will provide an airtight joint between the two header sections.
- the bottom of the header support rests on four bolts 56 which project upwardly from a floor plate 58 which is cast into the concrete floor of the sewage treatment tank and secured therein by two downwardly-depending U-shaped members 60 and 62.
- a bottom plate 64 having four openings formed therein is adjustably-disposed upon the bolts 56 by means of nuts 66 which are positioned both below and above the plate 64.
- An I-beam 68 is attached to the center of the plate 64 and supports a U-shaped bracket 70 which supports two V-shaped cradles comprising the arms 72, 74, 76, and 78.
- Each of the arms 72, 74, 76, and 78 are fitted at the upper extremity of the arm with corresponding horizontal lugs 80, 82, and 86, and a fourth lug which is behind lug 82 in FIG. 9.
- Each of the lugs 80, 82, and 86 has an opening therein to receive a bolt which depends downwardly from matching lugs 88, 90, and 92, all of which are welded to the sides of header 16.
- the lugs 88, 90, and 92 have openings therein for receiving bolts 96, 98, and 100.
- a fourth bolt which cannot be seen in the drawings engages a pair of lugs like the lugs and 82, behind bolt in FIG. 9 and on the other side of the pipe from bolt 96 in FIG. 8.
- the bolts 96, 98, 100 and the unseen bolt provide a means of rotating the headers 16 about their longitudinal axis during the installation process so as to align the axis of the connectors attached thereto in the horizontal plane.
- the bolts 56 which project up from the floor plate 58 provide a means of leveling the base support of the header 16 both vertically and horizontally.
- the invention is not limited to this particular type of support but that any suitable type of support can be used for supporting the headers, leveling them in the horizontal plane, and rotating them about their longitudinal axis to level the connectors in their horizontal plane. After these steps have been properly taken, the process of installing and leveling the diffusers 20 reduces itself to the simple procedure of screwing the diffusers 20 into the threaded portions of the connectors 22.
- this invention provides an improved method of installing aeration systems in sewage treatment tanks whereby the headers and diffusers can be readily brought to an accurate level position during installation without complicated alignment proceedings.
- the invention has been described with reference to certain embodiments, it should be understood that the invention is by no means limited to the disclosed embodiments since modifications can be made in the disclosed structure without departing from the fundamental principles of operation thereof.
- the header described in this application has diffusers extending from both sides, it will be clear that in some applications it may be either necessary or desirable to have the diffusers extending from one side only of the header.
- the disclosed supports 18 for the header utilize two V-shaped cradles to hold the headers, it may be desirable in some applications to utilize supports having only one V-shaped cradle.
- a method of installing an aeration system in a sewage tank comprising the steps of:
- prefabricating headers having transversely extending connectors coupled thereto and longitudinally spaced along the headers, said connectors being threaded to receive air diffusers;
- first and second cradles being connected to one another in axial alignment and disposed on opposite sides of a joint formed between the respective ends of said first and second header sections, said cradles being connected to and supported on a common vertical support member which engages the surface of said tank;
- a method as claimed in claim 1 in which the prefabricating of the headers with connectors coupled thereto includes the steps of forming longitudinally spaced openings in the headers, forming an opening in each connector, and welding the margin of each connector opening to one of the header openings.
- a method as claimed in claim 3 in which the prefabricating of the headers with the connectors coupled thereto includes the step of maintaining a predetermined orientation of the connectors with respect to the axis of the header by additionally connecting the connectors to the header laterally on each side of the longi tudinally spaced header openings.
- a method as claimed in claim 3 in which the margins of the openings in the headers are drawn outwardly to provide nipples, and in which the margins of the openings of the connectors are drawn outwardly to form nipples, and in which the end of the nipple of a connector is welded to the end of a nipple of the header.
- a method as claimed in claim 6 which includes the step of maintaining a predetermined orientation of the connectors with respect to the axis of the header by welding connection brackets between the connectors and the header laterally on each side of the nipples.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
Description
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05168685 US3802676A (en) | 1971-08-03 | 1971-08-03 | Method for installing aeration systems in sewage treatment tanks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05168685 US3802676A (en) | 1971-08-03 | 1971-08-03 | Method for installing aeration systems in sewage treatment tanks |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US34258673A Continuation-In-Part | 1973-03-19 | 1973-03-19 |
Publications (1)
Publication Number | Publication Date |
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US3802676A true US3802676A (en) | 1974-04-09 |
Family
ID=22612509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US05168685 Expired - Lifetime US3802676A (en) | 1971-08-03 | 1971-08-03 | Method for installing aeration systems in sewage treatment tanks |
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US (1) | US3802676A (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4012470A (en) * | 1973-03-19 | 1977-03-15 | Water Pollution Control Corporation | Sewage treatment aeration systems |
JPS52119765U (en) * | 1976-03-09 | 1977-09-10 | ||
US4350648A (en) * | 1981-06-30 | 1982-09-21 | Watkins Iii William L | Floating aerator |
US4428893A (en) | 1982-09-22 | 1984-01-31 | Norton Co. | Pipe support |
US4820412A (en) * | 1986-02-18 | 1989-04-11 | Meyer Rudolphi Karl U | Element for the transfer of gas into liquids, in particular, for the transfer of oxygen in sewage treatment plants |
FR2642665A1 (en) * | 1989-02-06 | 1990-08-10 | Amenagement Urbain Rural | DEVICE FOR DISTRIBUTING AND DIFFUSING A GAS IN A LIQUID MEDIUM FILLED WITH OR WITHOUT GRANULAR MATERIAL, AND BIOREACTOR EQUIPPED WITH SUCH A DEVICE |
US5714062A (en) * | 1993-10-01 | 1998-02-03 | Water Pollution Control Corporation | Diffuser conduit joint |
US5804104A (en) * | 1997-03-13 | 1998-09-08 | Meurer Industries, Inc. | Apparatus for moving an aeration unit |
US5851447A (en) * | 1996-06-17 | 1998-12-22 | Aer Research, Inc. | Floor-mounted aeration system |
US6132601A (en) * | 1998-03-05 | 2000-10-17 | March Frank Ernest | Ecological apparatus for processing sewage |
EP1302235A1 (en) * | 2001-10-10 | 2003-04-16 | Gummi-Jäger Kg Gmbh & Cie | Support for a aeration system |
US6767008B2 (en) * | 2001-05-03 | 2004-07-27 | Tomco2 Equipment Company | Method for mixing a solution including dissolved gas into a liquid |
US20070126135A1 (en) * | 2005-10-26 | 2007-06-07 | Parkson Corporation | Flexible aeration panel and methods of use |
US7314572B1 (en) | 2006-02-14 | 2008-01-01 | Meurer Research, Inc. | Methods of and apparatus for low-angle-tray settling with multi-zone configuration |
US20080296789A1 (en) * | 2005-11-29 | 2008-12-04 | Air Diffusion Systems | Fine Bubble Delivery For Potable Water, Wastewater, And Clean Water Treatment |
US7560035B1 (en) | 2007-06-22 | 2009-07-14 | Charles Lonnie Meurer | Overhead trough with constant trough flow velocity configuration and methods of regulating trough flow velocity |
US7718076B1 (en) | 2006-02-14 | 2010-05-18 | Charles Lonnie Meurer | Methods of and common gantry drive for single-pass cleaning of multiple stages of a material separation and removal system |
US7780015B1 (en) | 2006-08-24 | 2010-08-24 | Meurer Research, Inc. | Methods of and sludge collector with adjacent opposed oppositely-moving blades for moving sludge in a basin |
US7862014B2 (en) | 2005-11-30 | 2011-01-04 | Siemens Water Technologies Corp. | Hybrid diffuser system headloss balancing |
US20110278746A1 (en) * | 2007-10-16 | 2011-11-17 | Tharp Charles E | Retrievable diffuser module with truss construction |
US20120174666A1 (en) * | 2009-08-07 | 2012-07-12 | F. Ruijtenberg Holding B.V. | Water level measuring method and device |
Citations (10)
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US1138228A (en) * | 1914-07-08 | 1915-05-04 | Locomotive Superheater Co | Method of making u-shaped pipe-bends. |
US1457183A (en) * | 1921-01-26 | 1923-05-29 | American Foundry & Constructio | Neck or nozzle connection for pipe lines |
US1930314A (en) * | 1929-08-23 | 1933-10-10 | John A Healy | Wall support for plumbing fixtures |
US2221346A (en) * | 1938-07-13 | 1940-11-12 | Chicago Pump Co | Air diffusing means |
US2361636A (en) * | 1942-08-20 | 1944-10-31 | Smith Corp A O | Connection for hot-water tanks |
US2538859A (en) * | 1947-06-03 | 1951-01-23 | Joseph L Bradfield | Tube cross connection |
US2891296A (en) * | 1955-05-09 | 1959-06-23 | American Machine & Metals | Clamp |
US3208935A (en) * | 1962-01-08 | 1965-09-28 | Midland Ross Corp | Water recarbonating method and apparatus |
US3424443A (en) * | 1967-04-11 | 1969-01-28 | Water Pollution Control Corp | Apparatus for diffusing gas into a liquid |
US3672647A (en) * | 1970-09-25 | 1972-06-27 | Atara Corp | Quick release mechanism for sewage lagoon aeration guns |
-
1971
- 1971-08-03 US US05168685 patent/US3802676A/en not_active Expired - Lifetime
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1138228A (en) * | 1914-07-08 | 1915-05-04 | Locomotive Superheater Co | Method of making u-shaped pipe-bends. |
US1457183A (en) * | 1921-01-26 | 1923-05-29 | American Foundry & Constructio | Neck or nozzle connection for pipe lines |
US1930314A (en) * | 1929-08-23 | 1933-10-10 | John A Healy | Wall support for plumbing fixtures |
US2221346A (en) * | 1938-07-13 | 1940-11-12 | Chicago Pump Co | Air diffusing means |
US2361636A (en) * | 1942-08-20 | 1944-10-31 | Smith Corp A O | Connection for hot-water tanks |
US2538859A (en) * | 1947-06-03 | 1951-01-23 | Joseph L Bradfield | Tube cross connection |
US2891296A (en) * | 1955-05-09 | 1959-06-23 | American Machine & Metals | Clamp |
US3208935A (en) * | 1962-01-08 | 1965-09-28 | Midland Ross Corp | Water recarbonating method and apparatus |
US3424443A (en) * | 1967-04-11 | 1969-01-28 | Water Pollution Control Corp | Apparatus for diffusing gas into a liquid |
US3672647A (en) * | 1970-09-25 | 1972-06-27 | Atara Corp | Quick release mechanism for sewage lagoon aeration guns |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4012470A (en) * | 1973-03-19 | 1977-03-15 | Water Pollution Control Corporation | Sewage treatment aeration systems |
JPS52119765U (en) * | 1976-03-09 | 1977-09-10 | ||
US4350648A (en) * | 1981-06-30 | 1982-09-21 | Watkins Iii William L | Floating aerator |
US4428893A (en) | 1982-09-22 | 1984-01-31 | Norton Co. | Pipe support |
US4820412A (en) * | 1986-02-18 | 1989-04-11 | Meyer Rudolphi Karl U | Element for the transfer of gas into liquids, in particular, for the transfer of oxygen in sewage treatment plants |
FR2642665A1 (en) * | 1989-02-06 | 1990-08-10 | Amenagement Urbain Rural | DEVICE FOR DISTRIBUTING AND DIFFUSING A GAS IN A LIQUID MEDIUM FILLED WITH OR WITHOUT GRANULAR MATERIAL, AND BIOREACTOR EQUIPPED WITH SUCH A DEVICE |
EP0383648A1 (en) * | 1989-02-06 | 1990-08-22 | Societe D'amenagement Urbain Et Rural | Apparatus for distributing and diffusing gas in a liquid containing or not granular material, and bioreactor provided with such apparatus |
US5714062A (en) * | 1993-10-01 | 1998-02-03 | Water Pollution Control Corporation | Diffuser conduit joint |
US5851447A (en) * | 1996-06-17 | 1998-12-22 | Aer Research, Inc. | Floor-mounted aeration system |
US5804104A (en) * | 1997-03-13 | 1998-09-08 | Meurer Industries, Inc. | Apparatus for moving an aeration unit |
US6132601A (en) * | 1998-03-05 | 2000-10-17 | March Frank Ernest | Ecological apparatus for processing sewage |
US6767008B2 (en) * | 2001-05-03 | 2004-07-27 | Tomco2 Equipment Company | Method for mixing a solution including dissolved gas into a liquid |
EP1302235A1 (en) * | 2001-10-10 | 2003-04-16 | Gummi-Jäger Kg Gmbh & Cie | Support for a aeration system |
US20070126135A1 (en) * | 2005-10-26 | 2007-06-07 | Parkson Corporation | Flexible aeration panel and methods of use |
US8123201B2 (en) | 2005-10-26 | 2012-02-28 | Parkson Corporation | Flexible aeration panel and methods of use |
US7806389B2 (en) * | 2005-10-26 | 2010-10-05 | Parkson Corporation | Flexible aeration panel and methods of use |
US20100283163A1 (en) * | 2005-10-26 | 2010-11-11 | Parkson Corporation | Flexible aeration panel and methods of use |
US20080296789A1 (en) * | 2005-11-29 | 2008-12-04 | Air Diffusion Systems | Fine Bubble Delivery For Potable Water, Wastewater, And Clean Water Treatment |
US8348247B2 (en) | 2005-11-29 | 2013-01-08 | Air Diffusion Systems, A John Hinde Company | Fine bubble delivery for potable water, wastewater, and clean water treatment |
US8132794B2 (en) | 2005-11-29 | 2012-03-13 | Air Diffusion Systems | Fine bubble delivery for potable water, wastewater, and clean water treatment |
US7862014B2 (en) | 2005-11-30 | 2011-01-04 | Siemens Water Technologies Corp. | Hybrid diffuser system headloss balancing |
US7314572B1 (en) | 2006-02-14 | 2008-01-01 | Meurer Research, Inc. | Methods of and apparatus for low-angle-tray settling with multi-zone configuration |
US7718076B1 (en) | 2006-02-14 | 2010-05-18 | Charles Lonnie Meurer | Methods of and common gantry drive for single-pass cleaning of multiple stages of a material separation and removal system |
US20100314336A1 (en) * | 2006-08-24 | 2010-12-16 | Meurer Research Inc. | Method and apparatus for enhanced settling and collection of settled material |
US7981302B2 (en) | 2006-08-24 | 2011-07-19 | Meurer Research Inc. | Method and apparatus for enhanced settling and collection of settled material |
US8074810B2 (en) | 2006-08-24 | 2011-12-13 | Meurer Research, Inc. | Methods of and sludge collector with adjacent opposed oppositely-moving blades for moving sludge in a basin |
US7780015B1 (en) | 2006-08-24 | 2010-08-24 | Meurer Research, Inc. | Methods of and sludge collector with adjacent opposed oppositely-moving blades for moving sludge in a basin |
US7560035B1 (en) | 2007-06-22 | 2009-07-14 | Charles Lonnie Meurer | Overhead trough with constant trough flow velocity configuration and methods of regulating trough flow velocity |
US20110278746A1 (en) * | 2007-10-16 | 2011-11-17 | Tharp Charles E | Retrievable diffuser module with truss construction |
US20120174666A1 (en) * | 2009-08-07 | 2012-07-12 | F. Ruijtenberg Holding B.V. | Water level measuring method and device |
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